01877 550048 Negative Who called me from this phone number?

I was in a lesson and this phone number rang me, I couldn't answer as I care more about Education than a scammer who can't get a job. I called it back from a private number on my Nexus 5 instead of my main phone and all I heard was nothing it had answered but I didn't hear anything. However, when I called from my main phone from a private number it made some loud busy tones. I'm not sure who this is but it kind of has freaked me out as I'm weary about who calls me.

Called twice, did not answer, guessed it was spam

Rang my daughters phone I asked him to remove her number from their data base he carried on talking over me then started saying 'I love you baby'. So weird. Blocked the number

Claimed to be from Three Network. Asian accent. Obvious scammer.

Answered, silence then call ended. Sounded like a robocall failed.

Someone purportedly calling from ‘three network.’ Scam.

Wouldn't answer when try to rang back, phone detected as spam

I was called at 13:32 17/04/2024 , I didnt answer no message left ??

Didn't pick up but tried calling back, automated voice saying welcome to web solutions. Suspected scam/spam call.

Called me on 17/4/24 at 13:00 BST. Didn't answer as looked like spam call. No voicemail left.

didn't answer, called 3 times in the row but didn't leave a message.